disk_scanner test.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2277 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/add-ons/kernel/disk_scanner/DiskScannerTest.cpp

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+// DiskScannerTest.cpp
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <fs_device.h>
+#include <KernelExport.h>
+#include <disk_scanner/disk_scanner.h>
+
+// The following code will be moved into libroot.
+
+// get_nth_session_info
+/*!	\brief Retrieves information about a session on a device.
+	\param deviceFD File descriptor for the device in question.
+	\param index The session index.
+	\param sessionInfo Pointer to a pre-allocated session_info to be filled
+		   out by the function.
+	\return
+	- \c B_OK: Everything went fine.
+	- an error code: The contents of \a sessionInfo is undefined.
+*/
+status_t
+get_nth_session_info(int deviceFD, int32 index, session_info *sessionInfo)
+{
+	status_t error = (sessionInfo ? B_OK : B_BAD_VALUE);
+	disk_scanner_module_info *disk_scanner = NULL;
+	// get the partition scanner module
+	if (error == B_OK)
+		error = get_module(PARTSCAN_MODULE_NAME, (module_info**)&disk_scanner);
+	// get the session info
+	if (error == B_OK)
+		error = disk_scanner->get_nth_session_info(deviceFD, index, sessionInfo);
+	// put the partition scanner module
+	if (disk_scanner)
+		put_module(disk_scanner->module.name);
+	return error;
+}
+
+// get_nth_partition_info
+/*!	\brief Retrieves information about a partion on a device.
+
+	The fields \c device and \c mounted_at of \a partitionInfo are not set.
+
+	\param deviceFD File descriptor for the device in question.
+	\param sessionIndex The index of the session on which the partition
+		   resides.
+	\param partitionIndex The partition index.
+	\param partitionInfo Pointer to a pre-allocated extended_partition_info
+		   to be filled out by the function.
+	\return
+	- \c B_OK: Everything went fine.
+	- an error code: The contents of \a partitionInfo is undefined.
+*/
+status_t
+get_nth_partition_info(int deviceFD, int32 sessionIndex, int32 partitionIndex,
+					   extended_partition_info *partitionInfo)
+{
+	status_t error = (partitionInfo ? B_OK : B_BAD_VALUE);
+	session_info sessionInfo;
+	disk_scanner_module_info *disk_scanner = NULL;
+	// get the partition scanner module
+	if (error == B_OK)
+		error = get_module(PARTSCAN_MODULE_NAME, (module_info**)&disk_scanner);
+	// get the session info
+	if (error == B_OK) {
+		error = disk_scanner->get_nth_session_info(deviceFD, sessionIndex,
+											   &sessionInfo);
+	}
+	// get the partition info
+	if (error == B_OK) {
+		partitionInfo->info.logical_block_size
+			= sessionInfo.logical_block_size;
+		partitionInfo->info.session = sessionIndex;
+		partitionInfo->info.partition = partitionIndex;
+// NOTE: partitionInfo->info.device is not filled in!
+// The user can this info via B_GET_PARTITION_INFO. We could get the dir
+// of the raw device and construct the partition device name with session and
+// partition ID.
+partitionInfo->info.device[0] = '\0';
+		error = disk_scanner->get_nth_partition_info(deviceFD, sessionInfo.offset,
+			sessionInfo.size, partitionInfo);
+	}
+	// get the FS info
+	if (error == B_OK) {
+		error = disk_scanner->get_partition_fs_info(deviceFD, partitionInfo);
+		// in case the FS is unknown, we fill in the respective fields
+		if (error == B_ENTRY_NOT_FOUND) {
+			error = B_OK;
+			partitionInfo->file_system_short_name[0] = '\0';
+			partitionInfo->file_system_long_name[0] = '\0';
+			partitionInfo->volume_name[0] = '\0';
+			partitionInfo->mounted_at[0] = '\0';
+		}
+// NOTE: Where do we get mounted_at from?
+	}
+	// put the partition scanner module
+	if (disk_scanner)
+		put_module(disk_scanner->module.name);
+	return error;
+}
+
+
+// the test code starts here
+
+// print_session_info
+static
+void
+print_session_info(const char *prefix, const session_info &info)
+{
+	printf("%soffset:     %lld\n", prefix, info.offset);
+	printf("%ssize:       %lld\n", prefix, info.size);
+	printf("%sblock size: %ld\n", prefix, info.logical_block_size);
+	printf("%sindex:      %ld\n", prefix, info.index);
+	printf("%sflags:      %lx\n", prefix, info.flags);
+}
+
+// print_partition_info
+static
+void
+print_partition_info(const char *prefix, const extended_partition_info &info)
+{
+	printf("%soffset:         %lld\n", prefix, info.info.offset);
+	printf("%ssize:           %lld\n", prefix, info.info.size);
+	printf("%sblock size:     %ld\n", prefix, info.info.logical_block_size);
+	printf("%ssession ID:     %ld\n", prefix, info.info.session);
+	printf("%spartition ID:   %ld\n", prefix, info.info.partition);
+	printf("%sdevice:         `%s'\n", prefix, info.info.device);
+	printf("%sflags:          %lx\n", prefix, info.flags);
+	printf("%spartition code: 0x%x\n", prefix, info.partition_code);
+	printf("%spartition name: `%s'\n", prefix, info.partition_name);
+	printf("%spartition type: `%s'\n", prefix, info.partition_type);
+	printf("%sFS short name:  `%s'\n", prefix, info.file_system_short_name);
+	printf("%sFS long name:   `%s'\n", prefix, info.file_system_long_name);
+	printf("%svolume name:    `%s'\n", prefix, info.volume_name);
+	printf("%smounted at:     `%s'\n", prefix, info.mounted_at);
+}
+
+// main
+int
+main()
+{
+//	const char *deviceName = "/dev/disk/virtual/0/raw";
+	const char *deviceName = "/dev/disk/ide/ata/0/master/0/raw";
+	int device = open(deviceName, 0);
+	if (device >= 0) {
+		printf("device: `%s'\n", deviceName);
+		session_info sessionInfo;
+		for (int32 i = 0;
+			 get_nth_session_info(device, i, &sessionInfo) == B_OK;
+			 i++) {
+			printf("session %ld\n", i);
+			print_session_info("  ", sessionInfo);
+			extended_partition_info partitionInfo;
+			for (int32 k = 0;
+				 get_nth_partition_info(device, i, k, &partitionInfo) == B_OK;
+				 k++) {
+				printf("  partition %ld_%ld\n", i, k);
+				print_partition_info("    ", partitionInfo);
+			}
+		}
+		close(device);
+	}
+	return 0;
+}
+

src/tests/add-ons/kernel/disk_scanner/Jamfile

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+SubDir OBOS_TOP src tests add-ons kernel disk_scanner ;
+
+UsePrivateHeaders $(DOT) ;
+
+# the test app
+
+SimpleTest DiskScannerTest : DiskScannerTest.cpp
+	: libkernelland_emu.a be stdc++.r4 ;
+LOCATE on <installed>DiskScannerTest = [ on DiskScannerTest return $(LOCATE) ] ;
+Depends <installed>DiskScannerTest : DiskScannerTest ;
+
+# the add-on
+
+SEARCH_SOURCE += [ FDirName $(OBOS_TOP) src add-ons kernel disk_scanner ] ;
+
+{
+	local defines = [ FDefines USERLAND ] ;
+	SubDirCcFlags $(defines) ;
+	SubDirC++Flags $(defines) ;
+}
+
+Addon <userland>disk_scanner : userland disk_scanner :
+	disk_scanner.c
+;
+#LinkSharedOSLibs <userland>disk_scanner : libkernelland_emu.so ;
+LinkSharedOSLibs <userland>disk_scanner : <installed>DiskScannerTest ;
+
+#SubInclude OBOS_TOP src tests add-ons kernel disk_scanner fs ;
+SubInclude OBOS_TOP src tests add-ons kernel disk_scanner partition ;
+#SubInclude OBOS_TOP src tests add-ons kernel disk_scanner session ;